Rotary drier.



No. 664,187. Patented nec. la, |900.l

J. TAYLon & .1. E. KoHN.

RUTARY DRIER.

(Applicmon med may 22, 1899.)

2 Sheets-Sheet l,

(un Modal.)

A TTOHNE YJ TNE ohms PETERS ca. mom-nwo.. wAsHmGToN, D. c;

No. 664,ia7.

Patented Dec. I8, |900.v J. TAYLOR& J. E. KUHN.

ROTARY .DRIER.

(Application led May 22, 1899.)

heats-Sheet 2.

MQMNS (No Model.)

SES

UNITED STATESV PATENT EETICE.

JOI-IN TAYLOR AND JOSEPH E. KOHN, LOE CLEVELAND, OHIO, AssIeNOHs To THEKILBY MANUFACTURING COMPANY, OF SAME PLACE.

ROTARY DRn-2R.

SPECIFICATION forming part of Letters Patent No. 664,187, dated December18, 1960;

Application filed May Z2, 1899. Serial No. 717,812. (No model.)

To @ZZ w/tom it may concern: sequently rotates with the cylinder a uponBe it known that we, JOHN TAYLOR and the rotation of the latter.Cylinder b is ar- JOSEPH E. KOHN, residents of Oleveland,Ohio,` rangedin line with and consequently declines have invented certain new andVuseful Imtoward the cylinder a and is open at its rear .55 5provementsin RotaryDriers; and we dohereend and there communicates withthe forby declare the following to be a full, clear, ward end of thechamber of the cylinder 0,. and exact description of the invention, suchThe cylinder b is provided at its forward end as will enable othersskilled in the art to which with a head d', (see Figs. VII and VIII,)that it pertains to make and use the same. has an induction-aperturecl2, adapted to re- 6o ro Our invention relates to improvements in`Ceive the sugar that requires drying from a steam-driers, and moreespecially to a mascrew conveyer c, that is arranged horizonchine fordrying sugar. tally within a stationary case d, that is open The primaryobject of our invention is to at the top. The head l is rigid with thecase provide a sugar-drier that is simple and ineX- d, and consequentlystationary, and the cyl- 65 I pensive in construction, durable, andconveninder b rotates upon the head d. The latter ient. is provided alsowith a spout d3, that is in With this object in View the inventionconopen relation with the chamber of the case d sists in certainfeatures of construction and at the aperture d2. The head d is providedcombinations of parts hereinafter described, also with a manhole d4 foraffording access to 7o zo and pointed out in the claims. the cylinder band has another hole or aper- In the accompanying drawings, Figure I isture d5 for affording escape of currents of hot a side elevation, mostlyin central section, of air that may be forced or introduced into the asugar-drier embodyingourinvention. Fig. cylinder ct at the latters rearend. II is a forward end elevation, mostly in trans- The shaft c of thescrew conveyer is opera- 75 verse vertical section,taken centrallythrough tively provided forward of the conveyer-case the forward head gof the cylinder a.. Fig. with a sprocket-Wheel c2, that is operativelyIII isaforward end elevation, mostlyin transconnected, by means of achain c3, with a verse vertical section, taken through thecylsprocket-wheel e', operatively mounted upon inder d and the internaltubes Z of the said a driving-shaft e, to which power is applied 8o 3ocylinder at the inner side of the tu be-connect-` in any approvedmanner. The shaft e is roing head lo. Fig. IV is an enlarged sectiontated in the direction of the arrow and is arin detail on line IV IV,Fig. III. Fig. V is ranged horizontally and longitudinally of and anenlarged section in detail on line V V, Fig.' below the Cylinder b. Theshaft e below the III. Fig. VI is a section in detail on line VI rearend of the cylinder b is operatively pro- 85 VI, Fig. V. Fig. VII is aside elevation, vided with a pinion e2, that meshes with a mostly incentral longitudinal section, ofc-.the spur-gear f, formed upon theexterior of an machine, and in this figure the parts are annular castingg, that has bearing upon sevshown on a larger scale than in Figs. I, Il,eral rollers a'. Preferably the forward end and III and portions arebroken away to reof the cylinderovand the rear end of the cyl- 9o 4oduce the size of the drawings. Fig. VIII is inder b are secured to thesaid casting g, so

a forward end elevation of a portion of the that the latter forms theconnection between machinein section on line VIII VIII, Fig. VII. thecylinders b and ct. ,1

Referring to the drawings, d designatesv a The casting g is hollow andhas an annurotary drying-cylinder declining somewhat lar internalchamber g. The axes of the cyl- 95 toward its rear or discharging end.The cylinders a and b are coincident.- The casting g inder a is mountedupon any suitable nurncloses the forward end of the 'cylinderdaround berof suitably-supported and suitably-arthefrear end of the cylinder b, andconseranged rollers Ct. The cylinder d at its forquently forms a hollowannular head for the Ward or receiving end is provided with a cylforwardend of the cylinder a. Ico 5o inder b, that is diametrically smallerthan The annular chamber g within the head g cylinder o. and suitablyattached to and conis a steam-chamber. A steam-pipe hextends within thesaid head. The pipes 7L' 7L are con nected and in open relation at theirinner ends by a T h2 with the pipe 7L. Cylinder b has two internaltransversely-arranged braces b2 b2, arranged a suitable distance apartlongitudinally of the cylinder and provided at the axis of the cylinderwith boxes b3, affording bearing for the pipe 7L.

In the case illustrated the conveyer-case d and the connected spout d3are arranged at one side of the pipe 7L.

The pipe h is in open relation at its outer or receiving end with thesteam-supply pipe L', that is held stationary in any approved manner.ders, and to prevent leakage between the said pipe and the steam-supplypipe a stuit ing-boxjl is provided at the joint between the said pipes,which box embraces the steamsupply pipe and is supported from androtates with the pipe 7L.

An annular head-forming casting 71: is supported centrally of and withinthe rear end of the cylinder ot. The said casting is hollow and providedinternally with a chamber 75, that is arranged concentrically orcircumferentially of the axis of the cylinder and has its ends separatedby a diaphragm or partition 7&2, that extends transversely of thecasting and interrupts communication between opposite ends of thechamber 7s. The chamber of the head 7c is placed in open relation withthe chamber of the head g by a series of tubes 7, extendinglongitudinally of the cylinder a between the said heads.

The series of tubes Z in the case illustrated comprises twentyfour tubesthat are arranged at equal intervals circumferentially of the cylinder.The said tubes are secured to the heads in any approved manner. Thetubes are. parallel with the cylinder a, and hence decline in a rearwarddirection. The rear tube-connecting head 7c is provided with severalradial arms 7a3, arranged at equal intervals and suitably connectedtogether at their inner ends by a web 7a4, and the said head issuspended at the aforesaid arms from the head-surrounding portion of thecylinder a. In the case illustrated the rear head has The pipe 7Lrotates with the cylin-I lany approved manner.

The forward side of the diaphragm or par! tition 702 is that side whichfaces in the direction in which the head 7c and the cylinder a rotateduring the operation of the machine. The double-headed arrow in Fig. IIIindicates the direction in which the said head rotates. The chamber 7cof the head 7c next forward of the diaphragm or partition 7a2 and at theinner side of the chamber is connected in any approved manner with asystem of drainpipes, which system comprises a pipe m, that extendsrearwardly from the axis or central portion of the head 7c. A revolvingscreens, that is preferably somewhat larger diametrically than thecylinder a, surrounds the pipe m and is suitably secured to the rear endof the cylinder. Some of the sugar that is being dried in its passagethrough the screens is too coarse or lumpy for the mesh of the screenand is discharged at the screens rear end, whereas the liner sugarpasses through the mesh of the screen into a hopper or receptacle r,provided below the screen.

The pipe m is provided at its inner end with an external annular flangem', that is suitably secured to the arm-connecting web 7a4 of the head7e, and is in open relation with an aperture 707, formed within andcentrally of the said web. The web is provided upon its inner side witha boss 708, that projects laterally or radially of the cylinder a, andhas the hole 7c9,that is formed therein, open at the outer end of theboss and in open relation at its inner end with the aperture k7, formedin the web. The said boss is provided at its outer end with an externalannular flange 7310. A boss 7t11 is formed upon the inner periphery ofthe head 7a, adjacent to the diaphragm or partition 7a2, and has itshole k12 in open relation with the chamber 7a' next forward of the saiddiaphragm or partition. A curved pipe 7c13 extends between the said boss7s11 and the aforesaid boss 708 and is arranged approximately radiallyof the head 7a. The pipe 7013 is provided at its inner end with anexternal annular flange 7614, that is secured to the flange 7c10, andthe pipe 7013 at its opposite or outer end is provided with an externalannular flange 701', that is secured to the outer end of the boss 7511.The curved pipe 7613, together with the connections between it and thehead 7c and the pipe m, forms a passage-way between the discharging endof the chamber of the head 7c and the pipe m.

The pipe m rotates, of course, with the cyl inder. The said pipe at therear end of the screen is in open relation and connects with thedrain-pipe m2, that is held stationary in To prevent leakage between thepipe m2 and the connected pipe m, a stuffing-box m3 is provided, whichbox embraces the pipe m2 and is supported from the pipe m.

The operation of the machine will be readily undel'stood. Thecylinderaand the parts that rotate or revolve with the cylinder areactuated by motion transmitted from the driv- IOO IIO

ing-shaft e through the intergearing between the said shaft and thecylinder. The screw conveyer c discharges sugar into the cylinder b,wherein the sugar is dried in a measure. The sugar passes from thecylinder b into and through the steam-heated chamber of the cylinder ainto the screen. Too much moisture with the sugar upon the latterspassing into the cylinder d would result in the adhesion or sticking ofsugar upon the tubes, and hence partially drying the sugar before theintroduction of the sugar into the cylinder ct is desirable. The steampasses from the steam-supply pipe t' into lthe pipe h, thence isconducted by the branch pipes h h' into the forward head g of thecylinder, and thence the steam passes into the rearwardly-extendingtubes Z. A large portion of the steam will have condensed beforereaching the rear head k, and some will condense within the said head,and the water resulting from the condensation of the steam is dischargedinto the drain-pipe system at the discharge opening or outlet k12 nextforward of the diaphragm or partition of the said head k.

Our improved machine is more especially distinguished from sugar-driersheretofore made by the simplicity, convenience, efficiency, anddurability of its peculiar construction that forms the subject-matter ofthis application.

What we claim is- 1. A drier of the character indicated, comprising arotary cylinder declining in a rearward direction; a series of decliningtubes arranged 'longitudinally within, and at suitable intervalscircumferentially of, the cylinder; means for supplying steam to theforward ends of the said tubes; means for draining the tubes at theirrear ends; another rotary cylinder connected with the forward end of andarranged in line with the first-mentioned cylinder and provided, at itsforward end, with a stationary head having an inlet for the materialrequiring drying, a steam-pipe eX- tending centrally through andarranged axially of the forward cylinder, and terminating, at the rearend of the said forward cylinder, in branch pipes connected and in openrelation with the forward ends of the aforesaid tubes.

2. A drier of the character indicated, comprising a rotary cylinderdeclining in a rearward direction; a series of declining tubes arrangedlongitudinally within and at suit-able intervals circumfereutially ofthe cylinder; another rotary cylinder connected with the forward end of,and arranged in line with? and diametrically smaller than, thefirst-mentioned cylinder; a hollow head surrounding the rear end of theforward cylinder and closing the rear and tube-containing cylinder atthe latters forward end around the forward cylinder,which head issuitably secured to and forms the connection between the cylinders; asteam-pipe extending centrally through and axially of the forwardcylinder and connected and in open relation, at the rear end of the saidcylinder, with the chamber of the aforesaid head, and the braces b2internally of the said forward cylinder and provided with boxes b3affording bearing for the said steam-pipe, substantially as and for thepurpose specified.

3. In a drier of the character indicated, the combination, with a rotarycylinder; a system of tubes arranged longitudinally within and atsuitable intervals circumferentially of the cylinder, and means forsupplying steam to the forward ends of the said tubes; of an annularhead supported within the rear end of the cylinder and having acontinuous chamber extending circumferentially of and around thecylinder and in open relation with the rear ends of the aforesaid tubes;a partition or diaphragm arranged transversely of and within the headand interrupting endless continuity in the said chambercircumferentially of the cylinder, and a drain-pipe system comprising apassage-way that is in open relation with the said chamber adjacent tothat side of the aforesaid diaphragm or partition that faces in thedirection in which the cylinder and the aforesaid head rotate during theoperation of the machine.

4E. In a drier of the character indicated, the combination with a rotarycylinder; a series of tubes arranged longitudinally within and atsuitable intervals circumferentially of the cylinder, and means forsupplying steam to the forward ends of the said tubes; of an annularchambered head supported Within the rear end of the cylinder and havingradial arms extending from the heads inner periphery inwardly, whichhead has its chamber in open relation with the aforesaid tubes; adrain-pipe system connected with the said chamber; means instrumental inconducting Water accumulating within the said chamber into thedrain-pipe system, and rods arranged radially of the outer side of theaforesaid head, which rods are connected, at their inner ends, to thearms, and have their other ends connected to the cylinder.

5. In adrier of the character indicated, the combination, with a rotarycylinder, a series of tubes arranged within and longitudinally of thecylinder, and means for supplying steam to the forward end of the saidtubes, of a'u annular head 7a supported centrally of the rear end of thecylinder and having a chamber extending circumferentially of the saidcylinder and in open relation with the rear ends of the aforesaid tubes,which head is provided with the internal diaphragm or partition 7a2interrupting continuity in the aforesaid chamber circumferentially ofthe cylinder, a boss ku formed upon the inner periphery of the said headadjacent to the diaphragm or partition and having the hole therethroughin open relation with the chamber of the head next forward of the saiddiaphragm or partition, and a system of drain-pipes connected IOO IOS

IIO

and in open relation with the interior of the said boss, substantiallyas and for the purpose Set forth.

6. In a drier of the character indicated, the combination with a rotarycylinder, a series of tubes arranged Within and longitudinally of thecylinder, and means for supplying steam to the forward ends of the saidtubes; of an annular head 7c supported centrally of the rear end of thecylinder, and having a chamber extending circumferentially of thecylinder and in open relation With the rear ends of the aforesaid tubes,which head is provided with the diaphragm or partition 7a2, the boss k,the radial arms k3, the web lo,

JOHN TAYLOR. JOSEPH E. KOHN.

Witnessesz' C. H. DORER, A. H. PARRATT.

